Abstract
Ion photodesorption from rare-gas solids (Ar, Kr, Xe) is observed in the 25--120-eV photon energy range. Three different primary electronic processes, (i) formation of satellite states of the singly charged ions, (ii) direct double photoionization, and (iii) resonant double photoionization, are shown to produce ion desorption. A mechanism based on an interatomic charge exchange or ionization leading to a Coulomb repulsion between positive charges is proposed to account for ion desorption.
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